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H, J. BELL.

v INOANDESGENT GAS BURNER. No. 390,056. Patented Sept. 25, 1888.

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HAROLD J. BELL, OF vVOODBURY, NEWV JERSEY, ASSIGNOR TO THE \"ELS- EACH INOANDESGENT GAS LIGHT COMPANY, OF NEXV JERSEY.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 390,056, dated September 25, 1888.

Application filed March 21, 1888.

To all? whom it may concern.-

Be it known that I, HAROLD J. BELL, a citizen of the United States, residing at Woodbury, in the county of Gloucester and State of New Jersey, have invented new and useful Improvements in Incandescent Gas-Lamps, of which the following is a specification.

My invention relates to that class of lamps which are particularly adapted for the consumption of non-carbureted gas when used with an ineandescing device such as is known as a mantle in the \Velsbach system of incandescent gas-lighting.

The lamps now used in the \Velsbach system comprise an atmospheric gasburner and a chimney inclosing a mantle of refractory incandescent material suspended above the burner. By my present invention I am onabled to dispense with the ordinary atmospheric gas-burner and the chimney, though a chimney or globe may be employed, if preferred.

My invention consists in the combination, with a gas'burner having a top provided with a number of fine perforations or gas-exits, of alaterally-perforated air-tube surrounding the upper portion of the burner at a suitable dis tance therefrom, and a perforated cup that surrounds the air-tube and receives and protects the lower end of the mantle, the perforations in the said cup and air-tube being so arranged that currents of air will be caused to pass upward along both the inner and outer surfaces of the mantle, thereby effecting a perfeet combustion of gas with uniform incandescence of the mantle and enabling the chimney to be dispensed with, if desired.

In the annexed drawings,illustrating the invention, Figure 1 is a sectional elevation of 0 an incandescent gas lamp and burner cinbodying my improvements. Fig. 2 is a top view of the same. Fig. 3 is a perspective view of the burner-tube, perforated air-tube,and perforated cup connected together, but with 5 the burner removed.

The numeral 1 designates a portion of a gassupply pipe, 2 a burner-tube, and 3 the burner proper, which is provided with aflat top having a number of fine perforations or gas-exits,

4;, by which the escaping gas is divided intoa Serial No. 267,985. (No model.)

' surrounds the upper portion of the perforated air-tube 5, as shown. The cup or protector 7 extends slightly above the upper end of the air-tube 5,and its perforations 8 are preferably of greater number and larger combined area than the perforations 6 of the air-tube, thus serving to admit sufiicient air for both the outer and inner surfaces of the mantle. The perforations 8 are preferably vertically elongated and extend above the circular perforations 6 from a line thatis about on a level with the center of said circular perforations. A portion of the air admitted through the elongated and more numerous perforations 8 is thus caused to pass through the perforations 6 to the interior of the mantle, while the surplus ascends through the cup 7 to the outer mantle-surface.

The mantle 9 is suspended, as usual, from a ring, 10, on the upper end of a rod, 11, that is adj ustably supported by means of ascrew, 12, in a lug or stud, 13, projecting laterally from the burner-tube. The lower end of the mantie is received in the cup or protector 7 and surrounds the upper portion of the air-tube 5 above its lateral air-inlets 6, care being taken to adjustthe mantle and its support in such a manner that the lower edge of the mantle will not cover or obstruct the air-inlets.

A gallery, 14, maybe provided for supporting a globe or chimney, 15; but this is not es sential, as the arrangement and construction of the burner, air-tube, and perforated mantleprotector in the manner above-described are amply sufficient to secure an equal distribution of air on the outer and inner surfaces of the mantle, with perfect combustion of the gas and such degree of incandescence as to afl'ord a steady and brilliantlight without the use of a chimney.

What I claim as my invention is- 1. In an incandescent gas-lamp, the combination, with a gas-burner having a top provided with gasexits, of a laterally-perforated air-tube surrounding the upper portion of the burner at a sufficieut distance therefrom toiusure perfect combustion, and a perforated cup surrounding the air-tube to receive and protect the lower end of the mantle, whereby air is equally distributed on both the inner and outer mantle-surfaces, substantially as described.

2. In an incandescent gas-lamp, the COD]- bination of a gas-burner having a number of gas-exits, an air-tube surrounding said gasburner and provided with lateral air-inlets, and a cupshaped mautleprotcetor surround- 2o ing the air-tube and provided with lateral airinlets that extend above the air-inlets of the air-tube, whereby the air is distributed on both surfaces of the mantle, substantially as described.

3. In an incandescent gas-lamp, the combination of the burner-tube 2, the burner 3, provided atits top with gas exits 4, the airtube 5, having lateral air-inlets 6, surrounding the burner, the cup 7,surrounding the air-tube and provided with lateral air-inlets 8,and the mantle 9,suspended above the burner,with its lower edge inclosed in the cup 7 above the in lets of the air-tube, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HAROLD J. BELL.

Witnesses:

G. R. TAGGART, ROBERT S. CLYMER. 

